1231210032020 has 24 divisors (see below), whose sum is σ = 2586138785664. Its totient is φ = 492370161696.

The previous prime is 1231210031999. The next prime is 1231210032023. The reversal of 1231210032020 is 202300121321.

It is a self number, because there is not a number n which added to its sum of digits gives 1231210032020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231210032023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7026992 + ... + 7200071.

It is an arithmetic number, because the mean of its divisors is an integer number (107755782736).

Almost surely, 2^{1231210032020} is an apocalyptic number.

1231210032020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231210032020 is an abundant number, since it is smaller than the sum of its proper divisors (1354928753644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231210032020 is a wasteful number, since it uses less digits than its factorization.

1231210032020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14231399 (or 14231397 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 1231210032020 its reverse (202300121321), we get a palindrome (1433510153341).

The spelling of 1231210032020 in words is "one trillion, two hundred thirty-one billion, two hundred ten million, thirty-two thousand, twenty".